Pirn or cop winding machine.



APPLICATION HLED NOV. 24, 1913- Patented May 11, 1915.

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THOMAS A. BOYD, or GLASGOW, SCOTLAND.

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Specification of Letters Patent.

Patented May 11, 1915.

Application filed November 24, 1913'; Serial No'. so2,s14.

To all whom it may concern:

Be it lmown that I, THOMAS ALEXANDER BOYD, a subject of King George theFifth,-

and residing at Glasgow, Scotland, have invented certain new and usefulImprovements in Pirn or Cop Winding Machines, of which the following isa specification.

My invention refers to pirn and cop winding machines and has for itsobject improved means of guiding the yarn onto the cone of the pirn orcop.

My invention is applicable to machines in which the pirns or cops arebuilt in a cup or shaper.

In pirn or cop winding machines of the kind referred to, there is aconstant danger of the yarn being cut by the pressure of the cone of thepirn into the cup. This arises from the tendency of the thread to dwelland gather at the bottom and also at the top of the taper when thethread is guided between the two surfaces, viz., the wood pirn or bobbinand the inner face of the metal cup. To prevent this I cause thetraverse to lay on less thread at the top and bottom, thus preventingthe excessive pressure at these points and avoiding the damage to theyarn.

My invention consists in so operating the thread traverse guide as toalternately change the point to which the thread is traversed as itmoves toward the apex and also toward the base of the cone of the pirnor cop or toward the said apex alone or toward the said base of the conealone.

Accompanying this specification is one sheet of drawings showing a sidesectional view of my invention.

In carrying out my invention in one arrangement in the figure shown inthe drawings in which the pirn is wound in a cup or shaper I employ afixed cup 1, a pirn 2 in said cup, a spindle 3, to drive the said pirn,the said spindle being driven by ordinary means and arranged to re-'cede from. the cup endwise as the pirn is formed. Below the cup 1, Iplace a rocking traverse shaft 2* and on it I mount a thread guide twhich passes to the top side of the cup 1 and guides the thread 5 whichcomes from below onto the pirn. On the rocking shaft 2" is a horizontallever 6 projecting inward and having at its inner end 6 a stud andfriction roll 7. Below the fric-' tion roll 7 and operating same is adouble winged heart cam 8. One wing 8 of the said cam is about shorterthan the other wing 8 and the bosom 8 is deeper than the bosom 8 The cam8 is revolved by ordinary mechanism. When the lever 6 and the threadguide a are operated by the bosom 8 and the long wing 8 of the heart camthe said thread guide is moved from the base of the cone of the pirn 2to the apex 2 When the horizontal lever 6 and thread guide 4 areoperated by the bosom 8* and the short wing 8 of the heart cam 8 thethread 4 is guided from short of the base of the pirn to e short of theapex. Thus, only every second layer of yarn is traversed to the apex andbase of the pirn. By this means the yarn is more firmly wound upon thestem of the pirn and is less liable to get cut by the pressure of thepirn in the cup.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed I declare thatwhat I claim is v1. In pirn and cop winding machines, a cup or shaperwithin which the cone of the cop is built, a traverse guide for leadingthe thread to the cone of the cop within said cup or shaper, and meansfor reciprocating said guide, said means serving to move the guide todifferent points at the apex of the cup on successive reciprocations,for the purpose described.

2. In pirn and cop winding machines, a cup or shaper within which thecone of the cop is built, a traverse guide for leading the thread to thecone of the cop within said cup or shaper, and means for reciprocatingsaid guide, said means serving to move the guide to different points atthe base ofthe cup on successive reciprocations, for the purposedescribed.

3. In pirn and cop winding machines, a cup or shaper within which thecone of the cop is built, a traverse guide for leading the thread to thecone of the cop within said cup or shaper, and means for reciprocatingsaid guide, said means serving to move the guide to different points atthe apex and base of the cup respectively on successive reciprocations,for the purpose described.

4. In pirn and cop winding machines, a cup or shaper within which thecone of the cop is built, a traverse ide for leading In testimonywhereof I have signed my the thread tothe ep e oft e 'cop within sainame to this specification, in the presence 10 cup or shaper, and meansfor reciprocating of two subscribing Witnesses.

said guide, said means comprising double T A BOYD throw cam shaped toeffectthe travel of said guide to different points at the apex andWitnesses; n

base of the cup on successive fec'ipiocatiofis, JoiiN HORNELL,

for the purpose described. v J ALIES CUNNINGHAM.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

